ext4: Always set dx_node's fake_dirent explicitly.

When ext4_dx_add_entry() has to split an index node, it has to ensure that
name_len of dx_node's fake_dirent is also zero, because otherwise e2fsck
won't recognise it as an intermediate htree node and consider the htree to
be corrupted.

Signed-off-by: Andreas Schlick <schlick@lavabit.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index f27c8164c1fe..42f81d285cd5 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -1597,9 +1597,9 @@ static int ext4_dx_add_entry(handle_t *handle, struct dentry *dentry,
                         goto cleanup;
                 node2 = (struct dx_node *)(bh2->b_data);
                 entries2 = node2->entries;
+                memset(&node2->fake, 0, sizeof(struct fake_dirent));
                 node2->fake.rec_len = ext4_rec_len_to_disk(sb->s_blocksize,
                                                            sb->s_blocksize);
-                node2->fake.inode = 0;
                 BUFFER_TRACE(frame->bh, "get_write_access");
                 err = ext4_journal_get_write_access(handle, frame->bh);
                 if (err)